You go to another forest and measure the shadow of a tree as being 6 meters long. The shadow of your meterstick is 2 meters long. How tall is the tree?

Answers

Answer 1

Answer: Well, 6/n=3/1, so n=2.

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To be considered acid rain, precipitation would have to

Answers

Answer: precipitation will have to be deposited with a high level of sulphuric and nitric components

Explanation: precipitation is considered to be acidic when its pH falls below 5.6 (which is 25 times more acidic than pure distilled water). For an acid rain to occur, precipitation will have an acidic component such as sulfuric or nitric acid that fall to the ground from the atmosphere in wet or dry forms.

This can include rain, snow, fog, hail or even dust that is acidic.

The two primary sources of acid rain are sulfur dioxide (SO2), and oxides of nitrogen (NOx). Sulfur dioxide is a colourless, prudent gas released as a by-product of combusted fossil fuels containing sulfur. A variety of industrial processes, such as the production of iron and steel, utility factories, and crude oil processing produce this gas. In iron and steel production, the smelting of metal sulfate ore, produces pure metal. This causes the release of sulfur dioxide. Metals such as zinc, nickel, and copper are commonly obtained by this process. Sulfur dioxide can also be emitted into the atmosphere by natural disasters or means. This ten percent of all sulfur dioxide emission comes from volcanoes, sea spray, plankton, and rotting vegetation. Overall, 69.4 percent of sulfur dioxide is produced by industrial combustion. Only 3.7 percent is caused by transportation. Read more at: https://sites.google.com/site/acidrain1project/

The height of a wave from the equilibrium is 1 meter. Which parameter of the wave does this distance represent

Answers

Answer:

The amplitude of the wave

Explanation:

A wave can be defined by using several characteristics:

- The amplitude of a wave is the maximum displacement of the wave from its equilibrium position

- The wavelength of a wave corresponds to the distance between two adjacent points of the wave with same shape (e.g. the distance between two consecutive crests)

- The period of a wave corresponds to the time taken for one complete oscillation of the wave to occur

- The frequency of a wave corresponds to the number of complete oscillations of the wave in one second

In this problem, we are told that the height of the wave from equilibrium is 1 meter: based on the definitions above, we can say that this parameter corresponds to the amplitude of the wave.

The maximum height that a wave reaches above or below
its equilibrium level is the "amplitude" of the wave.

A common source of 'potential difference' or 'voltage' is a cell or battery. Explain

Answers

A battery is actually a association of several cells. So both can be called a source of potential difference.

A swimmer can travel 2.30 m/s in still water. The swimmer heads directly west across a steam whose current is 1.20 m/s n. What is his velocity relative to the ground

Answers

Answer:

velocity relative to the ground = 2.54 m/s

Explanation:

given data

still water Vx = 2.30 m/s

across a steam Vy = 1.20 m/s

solution

we get here first velocity relative to the ground is express as

velocity = $√(Vx^2+Vy^2)$ ...............1

put here value and we get

velocity = $√(2.3^2+1.20^2)$

velocity = 2.54 m/s

The control group in an experimental study will __________.

Answers

Answer:

receive no treatment during the experiment

Explanation:

Give you something to compare your results with. It's always nice to be able to see what changes have been made to the original, even if it's not technically the original (I know that was worded weird, I just don't know how else to explain it.) Hope this helped!

Indicar tipo de unión química que presentan los siguientes compuestos. Realizar a representación de Lewis, molecular o iónica, según corresponda: a-CH4 b-SrO c-HBr d-NH3 e-Cl2O f-Li2O g-CO2 h-MgCl2

Answers

Answer:

Explanation:

a. CH₄- Covalent bonding(ligação covalente)

b. SrO- ionic bonding (ligação iônica)

c. HBr- Polar Covalent bonding (ligação covalente polar)

d. NH₃ - covalent bonding(ligação covalente)

e. Cl₂O - Covalent bonding (ligação covalente)

f. Li₂O- ionic bonding (ligação iônica)

g. CO₂ - double covalent bonding (ligação covalente dupla)

h. MgCl₂- ionic bonding(ligação iônica)

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